Blowpipe



*(No Model.) Y A. D. BARRETT.

BLOW PIPE.

No. 570,656. Patented Nov. 3, 1896.

Mary? ey S5 es TME onus crus cc.. moro-urne.. wAsumm'oN, uA cv UNITEDSTATES PATENT OFFICE.-

ADDISON D. BARRETT, OF NORFOLK, VIRGINIA.

BLOWPIPE.

SPECIFICATION forming part of Letters Patent No. 570,656, dated November3, 1896.

Application filed September 9,1896. Serial No. 605,342, (No modela To(t/f whom t 11ml/ concern:

Be it known that I, ADDISON D. BARRETT, a citizen of the United States,residing at Norfolk, in the county of Norfolk and State of Virginia,have invented certain new and useful Improvements in Blowpipes; and I dodeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in devices for forcing a jet offlame against articles to expedite the heating of the same; and itsnovelty and advantages will be fully understood from the followingdescription and claims when taken in conjunction with the annexeddrawings, in Which- Figure l is a longitudinal section of my improveddevice with a portion in elevation, and Fig. 2 is a section taken in theplane indicated by the line of Fig. 1.

Referring by letter to the said drawings, A indicates a tube, of rubberor other compressible material, which is designed to be suitablyconnected to a source of gas supply.

B indicates a metallic tube which is con-` nected in a gas-tight mannerto the tube A, and C indicates a nozzle which is brazed on or otherwisesuitably connected to the forward end of the tube B and is disposed atabout the angle shown to the same, and has its lower end contracted, asindicated byu, for a purpose presently to be described. This nozzle Creceives the socket-sleeve D, which is brazed on or otherwise suitablyconnected to it at its upper end and eXtends'to a point adjacent to itscontracted end a, as shown.

E indicates the blowpipe o f my improved device. This pipe E ispreferably tapered or gradually reduced in diameter toward its forwardend, as shown, and it is provided at such end with theangularly-disposed nozzle F, which is reduced in diameter or tapered t0-toward its discharge end to conform to the socket-sleeve, in which it isinserted, and is provided at such discharge end with the enlargement b,designed to tit snugly in the socket-sleeve and thereby prevent theescape of air between the nozzle and said socketsleeve.

At about the point shown upon its nozzle F the blowpipe E is providedwith the collar G. This collar G bears upon the upper end of thesocket-sleeve and is designed for the engagement of the keepery H, thepurpose of which is to retain the nozzle of the blowpipe in thesocket-sleeve.

The keeper H is bifurcated at one end, as indicated by c, so as toenable it to straddle the blowpipe above the collar G for the purposestated, and it is provided at its opposite end with the collar d, whichloosely surrounds the tube B and serves toconnect it thereto. In virtueof this construction it will be observed that the keeper may be readilymoved into engagement with the blowpipe, so as to secure the nozzlethereof in the socket-sleeve D, and may as readily be moved out ofengagement with the blowpipe to permit of the removal of the same fromthe socket-sleeve.

In practice the compressible tube A is connected with a source of gassupply, (not illustrated,) and the blowpipe E is connected with asuitable bellows or the like, (also not illustrated,) or said blowpipemay be adapted for the application of the operators mouth at one end.When it is desired to use the device, the gas is turned on and isignited at the discharge end of the nozzle C. The operator thengraspsthe tube B with one hand and the compressible tubeA with the otherand holds the discharge end of the nozzle C at the desired distance fromthe article to be heated. By compressing the tube A,'1nore or less, withhis thumb and lingers the operator is enabled to provide a small orlarge jet of flame, as desired, and is also enabled to effect a materialsavin g of gas, which is a material advantage.

The manner described of connecting the blowpipe to the tube B permits ofthe said blowpipe swinging freely, so as not to interfere with themovements of the tube A and tube B in the hands of the operator.

The socket-sleeve D is not essential to my improved device, and whendesired it may be omitted, in which the collar G of the blowpipe .willbe made to rest on the upper end of the nozzle C.

Having described my invention, what I claim isl. The device describedfor forcing a jet of iiame against articles to be heated comprising atube, a nozzle C, secured upon one end of the tube and disposed at anangle thereto and TOO having its opposite ends open, a blowpipe having anozzle inserted in the nozzle C, and also having a collar-flange, and akeeper bifuroated at one end so as to straddle the blowpipe above itscollar-flange and having a eollar at its opposite end loosely mounted outhe tube, substantially as specified.

2. The device described for forcing a jet of i'lame against articles tobe heated comprising a colnpressible tube, a metallic tube connectedtherewith, a nozzle C, secured upon one end of the metallic tube anddisposed at an angle thereto and having its opposite ends open, asocket-sleeve arranged in said nozzle ADDISON D. BARRETT.

Writnesses: Y

CORA V. GRIFFIN, Il. E. DUPUY.

